Presentation on if else

1. CSC – 183
Programming C
Chapter - 5
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CSC-183
Decision Making and Branching

2. Simple if Statement :
• Format:
if ( test condition )
statements;
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3. Simple if Statement : (flowchart)
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Test
Expression
?
Statement-block
Statement - x
Next Statement
Entry
True
False

4. if_else Statement :
• Format:
if ( test condition )
statements;
else
statements;
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5. if_else Statement : (flowchart)
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Test
Expression
?
False-block
statement
Statement - x
Entry
True False
True-block
statement

6. nested if_else Statement
• When a series of decisions are involved, we may have to
use more than one if…else statement in nested form.
• Nested means one if statement inside of another if_else
statement.
• So, when one if statement appears inside of another if
statement for decision making is called nested if…else
• In nested if…else, nested if (inside one)may appear inside if
or else statement.
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7. nested if_else Statement
Format:
if ( condition )
{
if ( condition )
{
statement1;
}
else
{
statement2;
}
}
else
{
statement3 ;
}
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8. nested if_else Statement
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9. else_if ladder Statement
Format:
if(condition 1)
statements;
else if(condition 2)
statements;
else if(condition 3)
statements;
. . . . . . . . . . . . . . . .
else if(condition n)
statements;
else
default statement;
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10. else_if ladder Statement
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